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영어

I have considered the Korean character sets used in North and South Korea, including unicode and analyzed their way to improvement accord with Korean features. It can be used all around from Korean as a minimal element of following a feature of initial sound, medial vowel, final consonant from ancient data. I presented a character set that can role as a medium for conversion. Korean alphabets arrangement and input methods of 12 keypad are studied. Simply number of strokes are not proper to performance evaluation index. Number of movement, distance of movement, and usage of additive keys must be considered. It is optimal where ㅗ-ㅏ-ㅣ are on 4-5-6 keys. Necessity of old korean alphabets is increasing. Two sets system and three sets system is applicable to approach the design.